After updating Android Studio from 3.6 to 4.0, close project not works

Question

The same question as this one. I have two android projects on two windows, when I close one project by clicking [x] icon on my mac, the project closed but the window exists with a blank screen.

My Android Studio Version info:

Android Studio 4.0
Build #AI-193.6911.18.40.6514223, built on May 20, 2020
Runtime version: 1.8.0_242-release-1644-b3-6222593 x86_64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
macOS 10.15.4
GC: ParNew, ConcurrentMarkSweep
Memory: 1979M
Cores: 12
Registry: ide.new.welcome.screen.force=true
Non-Bundled Plugins: org.jf.smalidea

The Exception stack trace in Studio core:

java.lang.IndexOutOfBoundsException: Index: 1, Size: 0
    at java.util.ArrayList.rangeCheck(ArrayList.java:657)
    at java.util.ArrayList.get(ArrayList.java:433)
    at java.awt.Container.removeNotify(Container.java:2798)
    at javax.swing.JComponent.removeNotify(JComponent.java:4759)
    at com.intellij.ui.tabs.impl.JBTabsImpl.removeNotify(JBTabsImpl.java:553)
    at java.awt.Container.removeNotify(Container.java:2807)
    at javax.swing.JComponent.removeNotify(JComponent.java:4759)
    at java.awt.Container.removeNotify(Container.java:2807)
    at javax.swing.JComponent.removeNotify(JComponent.java:4759)
    at java.awt.Container.removeNotify(Container.java:2807)
    at javax.swing.JComponent.removeNotify(JComponent.java:4759)
    at java.awt.Container.removeNotify(Container.java:2807)
    at javax.swing.JComponent.removeNotify(JComponent.java:4759)
    at java.awt.Container.removeNotify(Container.java:2807)
    at javax.swing.JComponent.removeNotify(JComponent.java:4759)
    at java.awt.Container.removeNotify(Container.java:2807)
    at javax.swing.JComponent.removeNotify(JComponent.java:4759)
    at java.awt.Container.remove(Container.java:1209)
    at java.awt.Container.remove(Container.java:1267)
    at com.intellij.openapi.wm.impl.IdeRootPane.setToolWindowsPane(IdeRootPane.java:192)
    at com.intellij.openapi.wm.impl.ProjectFrameHelper$1.releaseFrame(ProjectFrameHelper.java:178)
    at com.intellij.openapi.wm.impl.IdeFrameImpl.releaseFrame(IdeFrameImpl.java:158)
    ...

Answer 1

I have also experienced this problem since updated to 4.0 (Windows).

for now, I'm just closing a project from File > Close Project, that works fine for me.